Mattress-spring



(No Model.)

N. &VJ. NELSON.

MATTRESS SPRING. No. 245,971. Patented Aug. 23,1881.

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UNITED STATES PATENT OFFICE.

NELS NELSON AND JAMES NELSON, OF MILWAUKEE, WISCONSIN.

MATTRESS-SPRING.

SPECIFICATION forming part of Letters Patent No. 245,971, dated August23, 1881.

Application filed February 16, 1881. (No model.)

To all whom t may concern:

Be it known that we, NELs NELSON and J AMES NELSON, citizens of theUnited States, residing at the city of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImprovements in Mattress-Springs; and We do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill 1o enable others skilled in the art to which it appertains to makeand use the same, reference being made to the accompanying drawing, andthe letters and figures marked thereon, which form a part of thisspecification.

Our invention relates to improvements in spiral-wire mattress-springs 5and it consists in the peculiar manner of connecting the end or ends ofthe wire of `which the springs are formed to the bodyot' rthe spring ator near zo the terminus of the first coil.

Heretofore the end of the wire forming the spring has been attached tothe body of the coil by being simply wound around the wire, forming thecoil at or near the point of the completion of therst circle, or, inother words,

a loop was formed upon the end of the wire in which the body of the coilis secured. Itis obvious that when thus formed the coil is liable toslip through the loop and the diameter of the coil increased and thespring deranged.

By our improvement the loop is formed in the body of the spring at apoint near the terminus of the first coil, through which the end of thewire upon which a hook has been formed is inserted.

Our invention is further explained by reference to the accompanyingdrawing, which represents a perspective view thereof.

A represents a spiral-wire mattress-spring.

B is the base or first coil. C is a loop formed 4o at a point near theterminus of the iirst coil.

D is a hook formed upon the end of the wire.

It is represented as secured in the loop O.

It is obvious that by this form of construction the end of the base-coilwill be securely retained at a fixed point in the loop, and theliability of the base-coil to expand, as heretofore, by the sliding ofthe loop is obviated. If desired, the opposite end of the spring mayalso be enlarged and theend ot' the upper coil se- 5o cured in the samemanner.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

The improvements in spiral-wire mattress springs herein described,consisting in the loop O, formed inthe body of the coil, and hook D,formed at the end of the coil, said hook being adapted to engage in theloop C and retain the end of the Wire or coil, substantially 6o as andfor the purpose specified.

In testimony whereofl we affix our signatures in presence of twowitnesses.

NELS NELSON. JAMES NELSON'.

Witnesses:

J As. B. ERWIN, E. G.AsMUs.

